Harley Davidson Evolution Engine History

Twin Cam 88 TM.

Harley davidson evolution engine history. Originally offered in a 1340 cc version the Evolution engine was manufactured with aluminum cylinders and heads. 1999-2006 Twin Cam 88B TM 2000-2006. Engine to save the company.

Thanks to the Evolution at last Harley Davidson enjoys good reliability and performance. 2017 sees the launch of Harley-Davidsons new Milwaukee-Eight engine so called due to its single-cam-actuated eight valves. In 1954 Harley-Davidson increased the engine to 38PS and a top speed of 161 kmh.

By the end of its run the engine was oil-tight reliable and pumped out stump-pulling torque. The Evolution engine is credited with saving Harley-Davidson. In 1936 Harley-Davidson introduces the EL model which had a 61cc engine and was later nicknamed Knucklehead and used a year later 1937 by Joe Petrali to set a new land speed record of 136183.

1250 units were produced and used as the basis for the racing engines of the KK series and as a forerunner of the Sportster engines. Among the Harley Davidson Sportster Crate Engines the Evolution engine was a big hit and was considered by many as the engine which literally saved the Harley brand as it was nearing bankruptcy. The Big Twin version powered tourers Dynas and Softails until 19992000.

It can be found in Harley-Davidsons 883 1100 and 1200 XLH Sportster models. The official name for the engine was assumed by many as the companys attempt to reform their brand image. The larger Evolution engine however was replaced by the Twin Cam 88 engine in 1999.

The sporty version of a Flathead engine had 742cm³ cubic capacity and 30hp. The engine design is often credited with saving Harley-Davidson from bankruptcy after the management buyout and subsequent reorganization that the company went through during the early 1980s. In 1984 Harley-Davidson introduced the Evolution engine a replacement for its Shovelhead engine.